const unsigned char *size_segment;
const unsigned char *vector_segment;
const unsigned char *imagedata_segment;
+ const unsigned char *buf_end = s->buf + s->size;
int huffman_offset, size_offset, vector_offset, imagedata_offset,
imagedata_size;
imagedata_size -= size;
}
} else {
+ if (vector_segment >= buf_end) {
+ av_log(s->avctx, AV_LOG_ERROR, "vector_segment overread\n");
+ return AVERROR_INVALIDDATA;
+ }
/* run-based motion compensation from last frame */
motion_x = sign_extend(*vector_segment >> 4, 4);
motion_y = sign_extend(*vector_segment & 0xF, 4);